chore(deps): update pnpm to v9

Author: renovate[bot]

package.json

@@ -3,7 +3,7 @@
   "type": "module",
   "version": "0.2.1",
   "private": true,
-  "packageManager": "pnpm@8.6.6",
+  "packageManager": "pnpm@9.15.5",
   "description": "Starter repo for Typescript projects and NPM packages",
   "author": "John Campion",
   "license": "MIT",